Knitting-machine.



M; a. ROSENTHALJ KNITTING MAGHINE.

APPLICATION FILED FEB. 12, 1913.

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KNITTING MACHINE. APPLICATION FILED T11R12, 1913. Lggg ggg Patented Dec. 23, 1913. v

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lt tWRFtIEl (El. PLOSENTHAL, F MENTOR, UHIO.

KNITTING-MACHZPINEn.

Patented nee. rare.

Application filed February 12, 1913. Serial No. 747,960.

To all whom it may concern:

7 Be it known that I, MORRIS Gr. Rosnnrnnn, citizen of the United States, residing at llilentor, in the county of Lake and State of Ohio, have invented certain new and useful Improvements in Knitting Machines, o'l which the following is a specification.

This invention relates to knit-ting machines of the cylinder and dial type, in which two sets of needles are employed for the production of a ribbed fabric, especially a double faced fabric having the back and trout of different materials. In knitting fabric of this kind on coarse gages it is not necessary to have any special construction at the drawing or'casting of? points of the dial or cylinder needles, and an ordinary rib knitting machine may be used for the purpose. But in fine gages it is impossible to use the ordinary construction for drawing in the full amount of loop used by the dial needles, which loops are drawn through the loops of the cylinder needles, for the reason that several needles would be drawing loops at the same time, and the increased or excess tension tears the yarn. I remedy this defect byusing the needles as jacks or blades to supply the amount of yarn needed by each needle, and I do this Toy-holding the latches of the needles closed by means of a guard, so that they draw the loops to theextent necessary to produce the fabric, before'the loops are inter-knit and cast off.

The invention is illustrated in the accompanying drawings in which- Figure 1 is a development of a portion of the cylinder and. its needles. Fig. 2 is a development of a portion of the dial and its needles. Fig. 3 is a perspective View of a part of the machine. Fig. 4t is a vertical section on the line it-4t of Fig. 3. Fig. 5

is a detail in perspective of the latch closer.

The yarns or threads are indicated a and b and will be supplied to the machine by any suitable means. lhe former is laid along.the cylinder needles and the latter upon the dial needles, the cylinder needles being indicated at 22 and the dial needles at 21, carried in grooves to reciprocate in the usual manner,

Referring first to the act-ion of the cylinder needles, the yarn a is taken in at the eye 8 of the yarn guide and laid across the raised ends of the needles and is taken in by the hooks thereof as in any ordinary machine. The cams are mounted on the cam cylinder 40. and the needles are first drawn down by the cam 1, drawing the thread or yarn down over the dial needles, which are then advanced, at a point 10 (Fig. 2) back of the open latches of said dial needles, to thelow point indicated at l (Fig. 1) just below the upper edge of the cylinder 41. At this point the old loops or partly complete stit hes are cast off of the cylinder needles, andmew loops areforined by said needles with. the new yarn so taken in. The cylinder needles are then forced up by the cam :l to a point above the edge of the cylinder as indicated at 5. its the needles draw down at the point 4 the latches thereof are closed and held closed by a. latch holder 20, to Me hereinafter referred to, so that said needles act as blades or jacks for trimming loops or sinking, to a certain extent. the yarn of the dial needles. After the dial loops are formed (while the cylinder needles are at point 5) the cylinder needles are drawn down by the cane 2 (Fig.

1) and the loops taken in at the point x are 7 formed into complete stitches at the point indicated at- 6 in Fig. The loops cast off at point 4 cannot be formed into complete stitches until free from the dial needles, that is, until the remainder of the loops (formed at point 4) are cast oil by the dial needles at the point (3, the dial needles being advanced between the cylinder needles between points a and 6. It will be seen that the cam 3 in connection with the latch holder 20 holds the cylinder needles up to form blades or jacks while the dial loops are being made.

Referring now to the action of the dial needles 21, the yarn b laid thereon bythe separate yarn guide having an eye 1.? for the yarn. The needles are then drawing in from the point 14 2) to the point 11, by action of the cam 15, and the needles start to draw back at said point 14. after the yarn of the cylinder needles has been looped (by action of the earn 1) over the dial needles at points in back of the latches of the dial needles, which are open at this point, and- When the dial needles draw back of the feed point 17 the latches thereof are closed means of the latch closer and holder 7 which, as shown in Fig. 3, rests with spring pressure on the needles at the at indicated at 18 in 2, and as the needles draw in at this point the latches are closed over the yarn taken in at the eye 17 The latch closer 7 relieves the strain on the yarn by closing the latch, instead of using the am to close the latches as in. ordinary mac ines, and holds the latches closed until the needles are retracted beyond the same. At the point 11, Fig. 2, the yarn of the dial needles is drawn around the closed latches of the cylinder needles, then at the point 5 on Fig. 1, and those needles act as jacks'for the purpose of drawing the necessary amount of yarn to form the loops of the dial needles, and by means of the cam 16 the series of loops are held at the point 12 and finally drawn into stitches at the point 13 opposite the drawing in point 6 of the cylinder needles; after which both sets of needles are advanced for the next operation in the usual manner. It will be seen that in consequence of this operation the c linder needles, when advanced to the o1nt 5, act as blades or sinkers' for the yarn oops of the dial needles, and said dial needles, when advanced to the point 12, act as blades or sinkers for the yarn oops of the cylinder needles; therefore each set of needles is advanced to serve as sinkers for theyarn loops of the other set.

Fig. 4 shows a sectional view or the cylinder and dial with the needles in position at the highest point of cam 3, Fig. 1, said needles being indicated at the point indicated at 5, and 20 is a needle latch ard supported on the cam cylinder for ho ding the latches'of the cylinder needles closed while said needles are acting as blades for the dial loops. The dial needle 21 is shown with a loop partly formed around the cylin- --der needle.

As indicated in Fig. 1, the cams 1 and 3 are preferably fastened to adjustable supports 9 resting on springs 18 and held by means of set screws in the cam cylinder.

In Fig. 3 the latch closer 1s shown in position. It comprises a lover or arm 27' to which is fastened, by set screw 29, a small blade or knife edged piece 7 which rests on the dial needles back of the latches thereof, which are then open, and as the needles draw in the latches are swung over and closed. The arm 27 is pivoted at 28 and has connected thereto a spring 26 which presses the blade 7 down upon the needles. The spring 26 is connected to an adjustable arm 24 having a slot with a screw 25 attaching the same to the bracket 23, and permitting, the ension of the spring to be varied to get 'mm or less pressure on the needles. The bracket 23 is fastened to the cam cylinder and is slotted for adjustment to set the latch closer in proper position.

.By the meansdeshribed, fine gage double faced fabric may be formedof different materials and theamount of material required by the dial needles is assured by using the cylinder needles as blades to provide 'stifi- I drawing and com lete stitch forming posi tions, and means 'or holding the latches of said advanced needles closed at said point, whereby said needles act as blades or jacks for looping the yarn drawn by the other set of needles.

2. A knitting machine having, in combination, two sets of needles, a yarn feed for each set, knitting cams for operating said needles, a cam acting to advance the needles of one set, between the drawing and cornplete-stitch forming positions, to a position ,where they will act as blades for; looping the yarn drawn by the other set of needles, and means for holding the latches of said advanced needles closed while they are so acting. I

'3. A knitting machine having, in combination, two sets of latch needles, operating devices for said needles, a latch holder, located between the feeding and complete stitch forming points of one set of needles, for holding closed the latches of said set of needles, after they take the yarn, means for advancing said set of needles, while closed, to form sinking blades, and means for looping -the yarn of the other set of needles around said closed needles.

4. A knitting machine having, in combination, two sets of latch needles, operating devices for said needles, and a latch holder located between the feeding and complete stitch forming/points of one set of. needles. for holding closed the latches of 8 id set'of needles, after they take the yarn, Said latch holder comprising a spring pressed blade bearing on the needles behind the latches when the needles are advanced to feeding position.

5. A knitting machine having, in combiholding closed thelatches or said needles" after they take the yarn, means for ad vancing the needles of each set, while so closed, to form blades for the other set, and

means for thereafter retracting the needles,.

to complete the stitches. V v 6. A. knitting machine having, in cornhi Ji ation, two sets of latch needles, operating devices. for said needles, and a latch holder operating on, the needles of each set between the feeding and complete stitch ormingpositions, for closing the latches of said 1,0ee,eee

needles afterthey take the :j 'ern, and cams acting on the needles of eachset to advance the same While the latches thereof are so closed, whereby the needles of each set will act as blades for drawing the yarn of the other set of needles.

7. A knitting machine having, in combination, sets of cylinder and dial latch needles, 'lxnittingcems for advancing and retracting said needles, a cam act-in on the cylinderifneedles between the feeding and enmplete 'stiteh forming positions to advance the same between the dial needles as the latter are retracting, and a latch holder 20 for holding the latches of the cylinder needles closed when "they are so advanced;

'8. A knitting machine having, in ecrhbi- 'a blade pressing on the same beyond the point at which said needles term 100195, e pivoted arm to which the blade attached,

and a swing connected to the arm, to press the blade against the needles.

In testimony whereof, I do aflix my eignw ture in presence of two Witnesses.

I MORRIS G. ROSENIHAL.

\Vitnesses: JOHN A. BOMMHARDI, J. B. DAVIS. 

